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26
Jul 20, 2013
07/13
by
Alexei E. Koshelev; Matthew J. W. Dodgson
texts
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Many superconducting materials are composed of weakly coupled conducting layers. Such a layered structure has a very strong influence on the properties of vortex matter in a magnetic field. This review focuses on the properties of the Josephson vortex lattice generated by the magnetic field applied in the layers direction. The theoretical description is based on the Lawrence-Doniach model in the London limit which takes into account only the phase degree of freedom of the superconducting order...
Source: http://arxiv.org/abs/1304.6735v1
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31
Sep 20, 2013
09/13
by
Erik Lucero; M. Hofheinz; M. Ansmann; Radoslaw C. Bialczak; N. Katz; Matthew Neeley; A. D. O'Connell; H. Wang; A. N. Cleland; John M. Martinis
texts
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We demonstrate new experimental procedures for measuring small errors in a superconducting quantum bit (qubit). By carefully separating out gate and measurement errors, we construct a complete error budget and demonstrate single qubit gate fidelities of 0.98, limited by energy relaxation. We also introduce a new metrology tool -- a Ramsey interference error filter -- that can measure the occupation probability of the state $\ket{2}$ down to $10^{-4}$, a magnitude near the fault tolerant...
Source: http://arxiv.org/abs/0802.0903v1
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32
Sep 21, 2013
09/13
by
Michael Hermele; Gil Refael; Matthew P. A. Fisher; Paul M. Goldbart
texts
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The dc Josephson effect refers to the dissipationless electrical current -- the supercurrent -- that can be sustained across a weak link connecting two bulk superconductors. This effect is a probe of the fundamental nature of the superconducting state. Here, we analyze the case of two superconducting thin films connected by a point contact. Remarkably, the Josephson effect is absent at nonzero temperature, and the resistance across the contact is nonzero. Moreover, the point contact resistance...
Source: http://arxiv.org/abs/cond-mat/0508301v1
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37
Sep 19, 2013
09/13
by
Radoslaw C. Bialczak; R. McDermott; M. Ansmann; M. Hofheinz; N. Katz; Erik Lucero; Matthew Neeley; A. D. O'Connell; H. Wang; A. N. Cleland; John M. Martinis
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We present a new method to measure 1/f noise in Josephson quantum bits (qubits) that yields low-frequency spectra below 1Hz. Comparison of noise taken at positive and negative bias of a phase qubit shows the dominant noise source to be flux noise and not junction critical-current noise, with a magnitude similar to that measured previously in other systems. Theoretical calculations show that the level of flux noise is not compatible with the standard model of noise from two-level state defects...
Source: http://arxiv.org/abs/0708.2125v1
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35
Sep 22, 2013
09/13
by
Matthew Edmonds; Manuel Valiente; Patrik Ohberg
texts
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We investigate the coherent dynamics of a Bose-Einstein condensate in a double well, subject to a density dependent gauge potential. Further, we derive the nonlinear Josephson equations that allow us to understand the many-body system in terms of a classical Hamiltonian that describes the motion of a nonrigid pendulum with an initial angular offset. Finally we analyze the phase-space trajectories of the system, and describe how the self-trapping is affected by the presence of an interacting...
Source: http://arxiv.org/abs/1302.0198v1
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24
Sep 18, 2013
09/13
by
Hans Fangohr; Alexei E. Koshelev; Matthew J. W. Dodgson
texts
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We study vortex matter in layered superconductors in the limit of zero Josephson coupling. The long range of the interaction between pancake vortices in the c-direction allows us to employ a mean-field method: all attractive inter-layer interactions are reduced to an effective substrate potential, which pancakes experience in addition to the same-layer pancake repulsion. We perform numerical simulations of this mean-field model using two independent numerical implementations with different...
Source: http://arxiv.org/abs/cond-mat/0210580v1
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81
Jul 20, 2013
07/13
by
Yoni Shalibo; Ya'ara Rofe; David Shwa; Felix Zeides; Matthew Neeley; John Martinis; Nadav Katz
texts
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We measure the lifetime ($T_{1}$) and coherence ($T_{2}$) of two-level defect states (TLSs) in the insulating barrier of a Josephson phase qubit and compare to the interaction strength between the two systems. We find for the average decay times a power law dependence on the corresponding interaction strengths, whereas for the average coherence times we find an optimum at intermediate coupling strengths. We explain both the lifetime and the coherence results using the standard TLS model,...
Source: http://arxiv.org/abs/1007.2577v1
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46
Jan 23, 2017
01/17
by
Matthew Josephson
texts
eye 46
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Book Source: Digital Library of India Item 2015.150956 dc.contributor.author: Matthew Josephson dc.date.accessioned: 2015-07-06T18:26:27Z dc.date.available: 2015-07-06T18:26:27Z dc.date.digitalpublicationdate: 2003-09-29 dc.date.citation: 1940 dc.identifier: RMSC, IIIT-H dc.identifier.barcode: 2999990016447 dc.identifier.origpath: /data/upload/0016/452 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/150956 dc.description.scanningcentre: RMSC, IIIT-H...
Topic: RMSC
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116
Jan 16, 2017
01/17
by
Josephson Matthew
texts
eye 116
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Book Source: Digital Library of India Item 2015.46209 dc.contributor.author: Josephson Matthew dc.date.accessioned: 2015-06-26T09:48:13Z dc.date.available: 2015-06-26T09:48:13Z dc.date.citation: 1946 dc.identifier.barcode: 99999990226554 dc.identifier.origpath: /data3/upload/0081/454 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/46209 dc.description.scanningcentre: UOD, Delhi dc.description.main: 1 dc.description.tagged: 0 dc.description.totalpages: 507...
Topic: UOD
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40
Jan 24, 2017
01/17
by
Josephson,matthew
texts
eye 40
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Book Source: Digital Library of India Item 2015.214055 dc.contributor.author: Josephson,matthew dc.date.accessioned: 2015-07-09T18:36:30Z dc.date.available: 2015-07-09T18:36:30Z dc.date.digitalpublicationdate: 2003-03-14 dc.date.citation: 1949 dc.identifier.barcode: 1990010084121 dc.identifier.origpath: /data_copy/upload/0084/126 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/214055 dc.description.scannerno: 4 dc.description.scanningcentre: IISc, Bangalore...
Topic: Other
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52
Jan 16, 2017
01/17
by
Josephson Matthew
texts
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Book Source: Digital Library of India Item 2015.505424 dc.contributor.author: Josephson Matthew dc.coverage.spatial: new york dc.date.accessioned: 2015-09-27T11:50:24Z dc.date.available: 2015-09-27T11:50:24Z dc.date.copyright: 1938 dc.date.citation: 1938 dc.identifier.barcode: 99999990265782 dc.identifier.origpath: /data4/upload/0118/586 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/505424 dc.description: vii, 706 dc.description.scanningcentre: UOD, Delhi...
Topic: UOD
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61
Jul 20, 2013
07/13
by
Matthew J. W. Dodgson; Vadim B. Geshkenbein; Gianni Blatter
texts
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We establish a new interstitial-vacancy unbinding transition of the Berezinskii-Kosterlitz-Thouless type, transforming the three dimensional pancake vortex lattice of a decoupled layered superconductor into a defected solid. This transition is the natural finite-field extension of the vortex-anti-vortex unbinding transition establishing the zero-field superfluid stiffness. At finite Josephson coupling, the defect unbinding transition turns into a topological decoupling transition.
Source: http://arxiv.org/abs/cond-mat/9902244v1
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45
Sep 21, 2013
09/13
by
Matthias Steffen; M. Ansmann; R. McDermott; N. Katz; Radoslaw C. Bialczak; Erik Lucero; Matthew Neeley; E. M. Weig; A. N. Cleland; John M. Martinis
texts
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We introduce a new design concept for superconducting quantum bits (qubits) in which we explicitly separate the capacitive element from the Josephson tunnel junction for improved qubit performance. The number of two-level systems (TLS) that couple to the qubit is thereby reduced by an order of magnitude and the measurement fidelity improves to 90%. This improved design enables the first demonstration of quantum state tomography with superconducting qubits using single shot measurements.
Source: http://arxiv.org/abs/cond-mat/0602432v1
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49
Jan 21, 2017
01/17
by
Matthew_josephson
texts
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Book Source: Digital Library of India Item 2015.76275 dc.contributor.author: Matthew_josephson dc.contributor.other: Ccl dc.date.accessioned: 2015-06-30T15:22:19Z dc.date.available: 2015-06-30T15:22:19Z dc.date.copyrightexpirydate: 0000-00-00 dc.date.digitalpublicationdate: 0000-00-00 dc.date.citation: 1946 dc.identifier.barcode: 2020010014058 dc.identifier.origpath: /data7/upload/0183/749 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/76275...
Topic: RMSC
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43
Sep 21, 2013
09/13
by
J. D. Strand; Matthew Ware; Félix Beaudoin; T. A. Ohki; B. R. Johnson; Alexandre Blais; B. L. T. Plourde
texts
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We demonstrate rapid, first-order sideband transitions between a superconducting resonator and a frequency-modulated transmon qubit. The qubit contains a substantial asymmetry between its Josephson junctions leading to a linear portion of the energy band near the resonator frequency. The sideband transitions are driven with a magnetic flux signal of a few hundred MHz coupled to the qubit. This modulates the qubit splitting at a frequency near the detuning between the dressed qubit and resonator...
Source: http://arxiv.org/abs/1301.0535v2
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35
Sep 22, 2013
09/13
by
T. Senthil; Matthew P. A. Fisher
texts
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We propose several tests of the idea that the electron is fractionalized in the underdoped and undoped cuprates. These include the ac Josephson effect, and tunneling into small superconducting grains in the Coulomb blockade regime. In both cases, we argue that the results are qualitatively modified from the conventional ones if the insulating tunnel barrier is fractionalized. These experiments directly detect the possible existence of the chargon - a charge $e$ spinless boson - in the...
Source: http://arxiv.org/abs/cond-mat/0011345v1
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33
Sep 24, 2013
09/13
by
Matthew W. Brenner; Dibyendu Roy; Nayana Shah; Alexey Bezryadin
texts
eye 33
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We present the first study of superconducting nanowires shunted with an external resistor, geared towards understanding and controlling coherence and dissipation in nanowires. The dynamics is probed by measuring the evolution of the V-I characteristics and the distributions of switching and retrapping currents upon varying the shunt resistor and temperature. Theoretical analysis of the experiments indicates that as the value of the shunt resistance is decreased, the dynamics turns more coherent...
Source: http://arxiv.org/abs/1202.4526v1
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73
Sep 18, 2013
09/13
by
Kirill N. Alekseev; Gennady P. Berman; David K. Campbell; Ethan H. Cannon; Matthew C. Cargo
texts
eye 73
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We consider the motion of ballistic electrons in a miniband of a semiconductor superlattice (SSL) under the influence of an external, time-periodic electric field. We use the semi-classical balance-equation approach which incorporates elastic and inelastic scattering (as dissipation) and the self-consistent field generated by the electron motion. The coupling of electrons in the miniband to the self-consistent field produces a cooperative nonlinear oscillatory mode which, when interacting with...
Source: http://arxiv.org/abs/cond-mat/9604173v1
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22
Sep 23, 2013
09/13
by
Michael Hermele; Gil Refael; Matthew P. A. Fisher; Paul M. Goldbart
texts
eye 22
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A system comprising two superconducting thin films connected by a point contact is considered. The contact resistance is calculated as a function of temperature and film geometry, and is found to vanish rapidly with temperature, according to a universal, nearly activated form, becoming strictly zero only at zero temperature. At the lowest temperatures, the activation barrier is set primarily by the superfluid stiffness in the films, and displays only a weak (i.e., logarithmic) temperature...
Source: http://arxiv.org/abs/cond-mat/0511210v1
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86
Sep 23, 2013
09/13
by
Matthew T. Bell; Lev B. Ioffe; Michael E. Gershenson
texts
eye 86
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We have studied the microwave response of a single Cooper-pair transistor (CPT) coupled to a lumped-element microwave resonator. The resonance frequency of this circuit, $f_{r}$, was measured as a function of the charge $n_{g}$ induced on the CPT island by the gate electrode, and the phase difference across the CPT, $\phi_{B}$, which was controlled by the magnetic flux in the superconducting loop containing the CPT. The observed $f_{r}(n_{g},\phi_{B})$ dependences reflect the variations of the...
Source: http://arxiv.org/abs/1111.2332v1
225
225
Feb 11, 2015
02/15
by
Josephson, Matthew
texts
eye 225
favorite 2
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1,472
1.5K
May 12, 2006
05/06
by
MATTHEW JOSEPHSON
texts
eye 1,472
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3,025
3.0K
Oct 24, 2006
10/06
by
Matthew Josephson
texts
eye 3,025
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comment 0
1,674
1.7K
Apr 8, 2016
04/16
by
Matthew C. Flanagan & Jennie Josephson
audio
eye 1,674
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Matt and Jennie debate the wisdom of the Eulogy Nugget.
Topics: Podcast, Storytelling
"The Last Lady" is an article from Poetry, Volume 17 . View more articles from Poetry . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-20572814
Source: http://www.jstor.org/stable/10.2307/20572814
Bibliography: p. 567-571
Topic: Statesmen
Topics: Hillman, Sidney, 1887-1946, Hillman, Sidney, 1887-1946
Includes bibliographical references
Topic: Capitalists and financiers
1,509
1.5K
Oct 29, 2006
10/06
by
MATTHEW JOSEPHSON
texts
eye 1,509
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"Selective list of books, monographs, and articles consulted": p. 507-510
Topics: Hugo, Victor, 1802-1885, Authors, French, Romanticism
Includes bibliographical references (p. 463-465) and index
Topics: Stendhal, 1783-1842, Stendhal, 1783-1842, Stendhal, Authors, French
Topics: Capitalists and financiers, Industries, Railroads
Includes bibliographical references and index
Topics: Capitalists and financiers, Railroads, Industries
Daisy Books for the Print Disabled
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46
May 9, 2012
05/12
by
Josephson, Matthew, 1899-1978; Josephson, Hannah; Perkins, Frances, 1882-1965. cn
texts
eye 46
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Bibliography: p. [485]-491
Topic: Smith, Alfred Emanuel, 1873-1944
Open Library
'''Matthew Josephson''' (February 15, 1899 – March 13, 1978) was an American journalist and author of works on nineteenth-century French literature and American political and business history of the late 19th and early 20th centuries. Josephson popularized the term "Robber baron (industrialist)|robber baron". 
